During November 2024, Timo Koch focused on improving the build system configuration for the OPM/opm-common repository, addressing two critical bugs related to dependency management and module path isolation. Working primarily with CMake, Timo resolved issues with transitive GMP linkage by updating FindGMP.cmake to use INTERFACE_LINK_LIBRARIES, ensuring downstream targets correctly inherit GMP dependencies. Additionally, Timo restored the CMAKE_MODULE_PATH after temporary modifications, preventing unintended side effects in downstream modules. These targeted changes enhanced build stability, reproducibility, and maintainability across environments. The work demonstrated a strong grasp of build system intricacies and contributed to more reliable integration workflows.